Values unit

From ObjectVision

Jump to: navigation, search

A values units describes how values of a data item need to be interpreted. A values unit consists of:

  1. a value type (obligatory) which need to correspond to the type of data values configured with this values unit. The value type of the values unit defines the data type, dimension and allowed range of values, see the value type table.
  2. a metric (optional, advised for units describing quantities) defining how the values need to be interpreted semantically (in meters, seconds, etc.).

Values units describe data items with a similar range of values. This makes these units suitable for the configuration of a default classification scheme (cdf property).

Personal tools